Abstract
Li1.3Al0.3−xScxTi1.7(PO4)3 (LASTP) (for concentrations x=0.01, 0.03, 0.05 and 0.07) system was prepared using solid state reaction. These ceramic samples were characterized using X-ray diffraction, EDX, SEM, density and DTA–TGA measurements. The electrical properties were studied in the frequency range of 20MHz to 1Hz and in the temperature range 303–423K, using the impedance spectroscopy. The effect of systematic variation of scandium in the LATP lattice has been investigated. The formation of impurity phases has been discussed and found to be detrimental for Li+ conductivity. The non Debye behavior observed in modulus spectra is attributed to local inhomogeneities and impurity phases.
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